Something

On *:text:!Changeworld*:#forces-khan: { 
  if  ($nick isop $chan) || ($nick ishop $chan) && ($2 isnum 2-138) {
  set %world $2 | msg $chan The world has been changed, type !world to view it 
  } 
}
On *:text:!world*:#forces-khan: { 
  if  ($nick isvoice $chan) && (%world.on == on) && (!$2) {
    notice $nick Current World: %world 
  } 
  elseif ($2 == on) && ($nick isop $chan) { set %world.on on }
  elseif ($2 == of) && ($nick isop $chan) { set %world.on off }
}